For the science or computing head of department and the lab technician who referee the labs by email, WhatsApp and a diary on the prep-room wall.

One shared Excel file for every lab: computer labs, physics, chemistry, biology, STEM and maker spaces, robotics rooms. Teachers pick the lab, date and period from dropdowns, type their class and name — and the Status column answers instantly: ✅ Booked, or ❌ Already booked / fixed timetable / out of service, so they pick another slot. Nobody can double-book, and nobody has to referee.

WHAT’S INSIDE
• Book Here — the shared log. First come, first served, enforced by formulas.
• Week View — one lab, one week, every period. Printable.
• Today — every lab today. Print it for the prep-room door.
• Overview — fixed, booked, free and % use per lab this week.
• Setup — school name, Sunday or Monday week start, 5 or 6 school days, up to 10 periods, up to 12 labs, Out-of-service switch, booking window, optional weekly cap per teacher.
• Fixed Timetable — timetabled lessons are blocked automatically.

Sample labs are pre-filled (Computer Lab 1 and 2, Physics, Chemistry, Biology, STEM / Maker Space, Robotics Room); rename them in Setup in five minutes.

Works in Excel 2016 or later (desktop, Microsoft 365, Excel for the web) and Google Sheets. No macros, no add-ins, no logins for teachers.

LICENCE: one school. Whole-School Pack (all six English editions) $39. Multi-Campus licence (up to five schools) $79. 7-day refund.